The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 1976
Filed:
Jul. 09, 1975
Roger E Baker, Redmond, WA (US);
Le Roy Vetsch, Lynnwood, WA (US);
Eldec Corporation, Lynnwood, WA (US);
Abstract
A flowmeter in which first and second sets of electrical signals representative, respectively, of the mass flow rate and the volumetric flow rate of a fluid are used to generate an adjusted mass flow rate signal which is representative of the mass flow rate and which reflects changes in flow rate substantially as they occur. Means are provided to generate a control signal representative of the density of the fluid, the control signal in turn being applied to a multiplier circuit which multiplies the volumetric flow rate signal by the control signal to generate the adjusted mass flow rate signal. The control signal is generated by comparing the first set of signals, which are representative of the mass flow rate, with a delayed portion of the adjusted mass flow rate signal, an inequality between the first set of signals and the adjusted mass flow rate signal resulting in a corresponding change in the magnitude of said control signal.